This is a multicenter, open label, single arm, phase I/II study. There will be no placebo usage within this trial.

Phase I:

Primary: To establish a maximum tolerated dose of the addition of Temsirolimus to a regimen of Bendamustine and Rituximab (BERT) in patients with relapsed follicular lymphoma and mantle cell lymphoma.

Phase II:

Primary: To evaluate the ORR in patients with MCL or FL treated with the established BERT dose Secondary: To determine the complete remission rate, progression free survival rate and overall survival rate and to investigate safety and tolerability of BERT.

A Phase I/II Trial to Evaluate the Safety, Feasibility and Efficacy of the Addition of Temsirolimus to a Regimen of Bendamustine and Rituximab for the Treatment of Patients With Follicular Lymphoma or Mantle Cell Lymphoma in First to Third Relapse

The first part of the study is a phase I study in which the maximum tolerated dose of the combination of Temsirolimus, Bendamustine and Rituximab will be established. In the phase I part of the trial 3 patients will be included in each dose level. After inclusion of 3 patients, each patient has to receive at least 2 complete cycles without DLT until the enrolment into the next cohort can be initiated. In case of one DLT, 3 additional patients will be added to the specific dose level. If a second DLT appears, the last dose level without DLT will be considered the standard dose for the phase II trial. If the third dose level is achieved without any DLT, there will be no further dose escalation.

In the phase II proportion of the trial, after establishment of a maximum tolerated dose, the efficacy of the combination regimens in two different patient cohorts will be evaluated. In the one cohort, 30 patients with relapsed mantle cell lymphoma will be treated; the second cohort will be composed of 30 patients with relapsed follicular lymphoma.

Status post. high dose therapy or no transplantation option available or patient refuses an aggressive treatment strategy

Subjects (or their legally acceptable representatives) must have signed an informed consent document indicating that they understand the purpose of and procedures required for the study and are willing to participate in the study

Adequate bone marrow reserve: Platelets of at least 75000/µl, absolute neutrophil count at least 1500/µl. In case of extensive bone marrow infiltration and lower platelet or absolute neutrophil counts, patients can not be included in the phase I part of the trial. In the phase II proportion of the trial patients may be included with a platelet count of more or equal to 50000/µl on the discretion of the investigator, if thrombocytopenia is associated with massive bone marrow infiltration.

Patients refractory to Bendamustine in a prior treatment line, defined as relapse within 1 year after initiation of first cycle. Exception: termination of treatment prior to third scheduled cycle for reasons other than toxicity.

Status post allogeneic transplantation

Peripheral neuropathy or neuropathic pain of Grade 2 or worse

Diagnosed or treated for a malignancy other than NHL except: adequately treated non-melanoma skin cancer, curatively treated in-situ cancer of the cervix, DCIS of the breast, or other solid tumors curatively treated with no evidence of disease for >5 years

Concurrent treatment with another investigational agent. Concurrent participation in non-treatment studies is not excluded.

Known intolerance to sirolimus or derivates, or Bendamustine or Rituximab.

Contacts and Locations

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study.
To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below.
For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01078142